DE4123907A1 - Sepn. of mercury@ and/or mercury cpds. from waste - comprises treatment with washing liq. contg. finely divided colloid and polysulphide additive - Google Patents

Sepn. of mercury@ and/or mercury cpds. from waste - comprises treatment with washing liq. contg. finely divided colloid and polysulphide additive

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Publication number
DE4123907A1
DE4123907A1 DE19914123907 DE4123907A DE4123907A1 DE 4123907 A1 DE4123907 A1 DE 4123907A1 DE 19914123907 DE19914123907 DE 19914123907 DE 4123907 A DE4123907 A DE 4123907A DE 4123907 A1 DE4123907 A1 DE 4123907A1
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DE
Germany
Prior art keywords
mercury
additive
washing liquid
sepn
cpds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19914123907
Other languages
German (de)
Inventor
Andreas Dr Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Wiegand GmbH
Original Assignee
GEA Wiegand GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEA Wiegand GmbH filed Critical GEA Wiegand GmbH
Priority to DE19914123907 priority Critical patent/DE4123907A1/en
Publication of DE4123907A1 publication Critical patent/DE4123907A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/64—Heavy metals or compounds thereof, e.g. mercury

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

Sepn. of mercury and/or mercury cpds. comprises using at least one process stage in which a washing liq. is supplied which contains finely divided pref. colloidal. The additive is pref. a polysulphide soln. esp. of Na2Sx and/or (NH4)2Sx and/or K2Sx where x = 1-5. The additive is esp. pref. a soln. of sulphur in thiosulphate and/or alcohol and is acidic in a first stage and alkaline in a second stage. USE/ADVANTAGE - For sepn. of mercury (cpds) esp. from incineration of household rubbish or clarification mud.

Description

Die Erfindung betrifft ein Verfahren zur Abscheidung von Quecksilber und/oder Quecksilber enthaltenden Verbin­ dungen aus - insbesondere bei der Verbrennung von Haus­ müll oder Klärschlamm entstehendem - Rauch in einem Rauchgaswäscher, der wenigstens eine mit einer Wasch­ flüssigkeit beschickte Stufe aufweist.The invention relates to a method for the deposition of Mercury and / or compound containing mercury emissions - especially when burning houses garbage or sewage sludge - smoke in one Flue gas scrubber, at least one with a wash liquid loaded stage.

Aufgabe der Erfindung ist es, das Quecksilber und/oder die Quecksilber enthaltenden Verbindungen in der Wasch­ flüssigkeit in Feststoffteilchen zu überführen, die aus der Waschflüssigkeit leicht entfernt werden können.The object of the invention is the mercury and / or Compounds containing mercury in the wash to convert liquid into solid particles, the can be easily removed from the washing liquid.

Zur Lösung dieser Aufgabe ist das Verfahren dadurch gekennzeichnet, daß der Waschflüssigkeit ein Additiv beigegeben wird, das in der Waschflüssigkeit fein ver­ teilten elementaren Schwefel erzeugt.The method is thereby to solve this task characterized in that the washing liquid is an additive is added, which ver ver in the washing liquid shared elemental sulfur.

Besonders wirksam ist das Verfahren, wenn das Additiv in der Waschflüssigkeit kolloidalen Schwefel erzeugt.The process is particularly effective when the additive colloidal sulfur is generated in the washing liquid.

Besonders wirtschaftlich ist es, wenn das Additiv eine Polysulfidlösung - insbesondere eine Lösung von Na2Sx und/oder (NH4)2Sx und/oder K2Sx mit 1<x<5 - enthält und/oder wenn das Additiv eine Thiosulfatlösung und/oder eine alkoholische Lösung von Schwefel in Wasser enthält.It is particularly economical if the additive contains a polysulfide solution - in particular a solution of Na 2 S x and / or (NH 4 ) 2 S x and / or K 2 S x with 1 <x <5 - and / or if the additive contains a thiosulfate solution and / or an alcoholic solution of sulfur in water.

Eine besonders hohe Abscheidung von Quecksilber enthal­ tenden Verbindungen unterschiedlicher Art erhält man, wenn die Waschflüssigkeit in einer ersten Stufe sauer und in einer folgenden Stufe alkalisch ist.A particularly high level of mercury separation different types of connections are obtained, if the washing liquid is acidic in a first stage and is alkaline in a subsequent step.

Zur Durchführung des Verfahrens ist es ausreichend, wenn die Waschflüssigkeit 20 bis 40 mg, bevorzugt 25 bis 35 mg, Schwefel pro Liter enthält. To carry out the procedure it is sufficient if the washing liquid 20 to 40 mg, preferably 25 to 35 mg, Contains sulfur per liter.  

Um die durch das Additiv erzeugten Feststoffteilchen aus der Waschflüssigkeit zu entfernen, werden bevorzugt die durch das Additiv in der Waschflüssigkeit erzeugten, im wesentlichen unlöslichen Feststoffteilchen abfiltriert.To the solid particles generated by the additive to remove the washing liquid, are preferred generated by the additive in the washing liquid, filtered off essentially insoluble solid particles.

Die Erfindung wird im folgenden an einem Ausführungs­ beispiel unter Hinweis auf die beigefügte Zeichnung beschrieben.The invention is based on an embodiment example with reference to the attached drawing described.

In der Zeichnung ist eine Stufe eines Rauchgaswäschers skizziert, der ein vertikales Strahlwaschrohr 2 und einen sich unten an das Strahlwaschrohr 2 anschließenden Abscheider 4 aufweist. In das Strahlwaschrohr 2 wird oben durch einen seitlichen Stutzen 6 der zu reinigende Rauch in Richtung des Pfeils 8 eingeführt. Durch das Strahlwaschrohr 2 und den Abscheider 4 zir­ kuliert eine Waschflüssigkeit. Hierzu weist der Ab­ scheider 4 einen Bodenbereich 10 auf, in dem sich die Waschflüssigkeit bis zu einem durch einen Pegelregler 12 bestimmten Pegel sammeln kann. Aus dem Bereich 10 wird die Waschflüssigkeit über eine Leitung 14 einer Pumpe 16 zugeführt und von der Pumpe durch eine Leitung 18 zu einer nach unten gerichteten Düsenanordnung 20 im oberen Bereich des Strahlwaschrohrs 2, die oberhalb des Stutzens 6 angeordnet ist, gepumpt.In the drawing, a stage of a flue gas scrubber is outlined, which has a vertical jet washing pipe 2 and a separator 4 which adjoins the jet washing pipe 2 at the bottom. In the jet washing pipe 2 , the smoke to be cleaned is introduced in the direction of arrow 8 through a side connection 6 . A washing liquid is circulated through the jet washing pipe 2 and the separator 4 . For this purpose, the separator 4 has a bottom region 10 in which the washing liquid can collect up to a level determined by a level controller 12 . From the area 10 , the washing liquid is fed via a line 14 to a pump 16 and pumped by the pump through a line 18 to a downwardly directed nozzle arrangement 20 in the upper area of the jet washing pipe 2 , which is arranged above the nozzle 6 .

In den Bereich 10 wird durch eine Leitung 22 das eingangs beschriebene Additiv eingeführt und aus dem Bereich 10 über eine Leitung 24 verunreinigte Waschflüssigkeit zum Filtern abgeführt. Der gereinigte Rauch wird aus dem oberen Bereich des Abscheiders 4 über einen Stutzen 26 in Pfeilrichtung 28 abgeführt.The additive described in the introduction is introduced into the region 10 through a line 22 and contaminated washing liquid is removed from the region 10 via a line 24 for filtering. The cleaned smoke is discharged from the upper area of the separator 4 via a nozzle 26 in the direction of the arrow 28 .

Claims (7)

1. Verfahren zur Abscheidung von Quecksilber und/oder Queck­ silber enthaltenden Verbindungen aus - insbesondere bei der Verbrennung von Hausmüll oder Klärschlamm entste­ hendem - Rauch in einem Rauchgaswäscher, der wenig­ stens eine mit einer Waschflüssigkeit beschickte Stufe aufweist, dadurch gekennzeichnet, daß der Waschflüssigkeit ein Additiv beigegeben wird, das in der Waschflüssigkeit fein verteilten elemen­ taren Schwefel erzeugt.1. A process for the separation of mercury and / or mercury-containing compounds from - in particular in the combustion of household waste or sewage sludge arising - smoke in a flue gas scrubber which has at least one stage loaded with a washing liquid, characterized in that the washing liquid Additive is added, which produces finely divided elementary sulfur in the washing liquid. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Additiv in der Waschflüssigkeit kolloidalen Schwefel erzeugt.2. The method according to claim 1, characterized in that the additive in the washing liquid colloidal sulfur generated. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Additiv eine Polysulfidlösung - insbesondere eine Lösung von Na2Sx und/oder (NH4)2Sx und/oder K2Sx mit 1<x<5 - enthält. 3. The method according to claim 1 or 2, characterized in that the additive is a polysulfide solution - in particular a solution of Na 2 S x and / or (NH 4 ) 2 S x and / or K 2 S x with 1 <x <5 - contains. 4. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Additiv eine Thiosulfatlösung und/oder eine alko­ holische Lösung von Schwefel in Wasser enthält.4. The method according to claim 1 or 2, characterized in that the additive is a thiosulfate solution and / or an alcohol contains holic solution of sulfur in water. 5. Verfahren nach einem der vorhergehenden Ansprüche, da­ durch gekennzeichnet, daß die Waschflüssigkeit in einer ersten Stufe sauer und in einer folgenden Stufe alkalisch ist.5. The method according to any one of the preceding claims characterized in that the washing liquid in a acidic in the first stage and alkaline in a subsequent stage is. 6. Verfahren nach einem der vorhergehenden Ansprüche, da­ durch gekennzeichnet, daß die Waschflüssigkeit 20 bis 40 mg, bevorzugt 25 bis 35 mg, Schwefel pro Liter ent­ hält.6. The method according to any one of the preceding claims, since characterized in that the washing liquid 20 to 40 mg, preferably 25 to 35 mg, of sulfur per liter holds. 7. Verfahren nach einem der vorhergehenden Ansprüche, da­ durch gekennzeichnet, daß durch das Additiv in der Waschflüssigkeit erzeugte, im wesentlichen unlösliche Feststoffteilchen abfiltriert werden.7. The method according to any one of the preceding claims characterized in that by the additive in the Wash liquid produced, essentially insoluble Solid particles are filtered off.
DE19914123907 1991-07-18 1991-07-18 Sepn. of mercury@ and/or mercury cpds. from waste - comprises treatment with washing liq. contg. finely divided colloid and polysulphide additive Withdrawn DE4123907A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914123907 DE4123907A1 (en) 1991-07-18 1991-07-18 Sepn. of mercury@ and/or mercury cpds. from waste - comprises treatment with washing liq. contg. finely divided colloid and polysulphide additive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914123907 DE4123907A1 (en) 1991-07-18 1991-07-18 Sepn. of mercury@ and/or mercury cpds. from waste - comprises treatment with washing liq. contg. finely divided colloid and polysulphide additive

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DE4123907A1 true DE4123907A1 (en) 1993-01-21

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022563A1 (en) * 1993-04-06 1994-10-13 Shell Oil Company Volatile metals capture from gazeous streams
DE4437781A1 (en) * 1994-10-25 1996-05-02 Steinmueller Gmbh L & C Process for removing mercury from an exhaust gas containing mercury
DE19731162A1 (en) * 1997-07-21 1999-01-28 Steinmueller Gmbh L & C Removing mercury from waste incineration plant flue gas
US6403044B1 (en) * 1998-02-27 2002-06-11 Ada Technologies, Inc. Method and apparatus for stabilizing liquid elemental mercury
US6797178B2 (en) 2000-03-24 2004-09-28 Ada Technologies, Inc. Method for removing mercury and mercuric compounds from dental effluents
US6972120B2 (en) 2001-02-16 2005-12-06 Fisia Deutschland Gmbh Method of removing mercury from flue gases
DE102008005742A1 (en) * 2008-01-23 2009-07-30 Vosteen Consulting Gmbh Process for the improved and cost-effective wet separation of mercury from flue gases
CN102949926A (en) * 2012-11-16 2013-03-06 昆明理工大学 Method for recycling sulfur dioxide (SO2) and heavy metal in metallurgical gas
CN105214455A (en) * 2015-09-17 2016-01-06 昆明理工大学 The method of denitration removing heavy-metal while of a kind of
CN105233647A (en) * 2015-09-17 2016-01-13 昆明理工大学 Desulphurization denitration method for ammonium sulfide solution
WO2018002540A1 (en) * 2016-06-29 2018-01-04 Areva Nc Process for immobilizing a mercury-containing waste
CN109200795A (en) * 2018-11-13 2019-01-15 中南大学 A kind of method of Elemental Mercury in sulfur dioxide synergic nano sulphur solution efficient removal flue gas
CN109248549A (en) * 2018-11-13 2019-01-22 中南大学 A method of using the washing removing of superfine nano sulphur solution containing Elemental Mercury in mercury gas
US10987531B2 (en) * 2015-06-17 2021-04-27 Sarp Industries Method for stabilizing metallic mercury

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022563A1 (en) * 1993-04-06 1994-10-13 Shell Oil Company Volatile metals capture from gazeous streams
DE4437781A1 (en) * 1994-10-25 1996-05-02 Steinmueller Gmbh L & C Process for removing mercury from an exhaust gas containing mercury
DE19731162A1 (en) * 1997-07-21 1999-01-28 Steinmueller Gmbh L & C Removing mercury from waste incineration plant flue gas
DE19731162C2 (en) * 1997-07-21 2002-09-26 Steinmueller Gmbh L & C Process for removing mercury from an exhaust gas containing mercury
US6403044B1 (en) * 1998-02-27 2002-06-11 Ada Technologies, Inc. Method and apparatus for stabilizing liquid elemental mercury
US6797178B2 (en) 2000-03-24 2004-09-28 Ada Technologies, Inc. Method for removing mercury and mercuric compounds from dental effluents
US6972120B2 (en) 2001-02-16 2005-12-06 Fisia Deutschland Gmbh Method of removing mercury from flue gases
DE102008005742A1 (en) * 2008-01-23 2009-07-30 Vosteen Consulting Gmbh Process for the improved and cost-effective wet separation of mercury from flue gases
CN102949926A (en) * 2012-11-16 2013-03-06 昆明理工大学 Method for recycling sulfur dioxide (SO2) and heavy metal in metallurgical gas
US10987531B2 (en) * 2015-06-17 2021-04-27 Sarp Industries Method for stabilizing metallic mercury
CN105233647A (en) * 2015-09-17 2016-01-13 昆明理工大学 Desulphurization denitration method for ammonium sulfide solution
CN105214455A (en) * 2015-09-17 2016-01-06 昆明理工大学 The method of denitration removing heavy-metal while of a kind of
WO2018002540A1 (en) * 2016-06-29 2018-01-04 Areva Nc Process for immobilizing a mercury-containing waste
FR3053257A1 (en) * 2016-06-29 2018-01-05 Areva Nc METHOD FOR IMMOBILIZING A WASTE COMPRISING MERCURY
GB2566214A (en) * 2016-06-29 2019-03-06 Orano Cycle Process for immobilizing a mercury-containing waste
CN109689169A (en) * 2016-06-29 2019-04-26 奥拉诺时代 The method of fixed mercurous waste
CN109689169B (en) * 2016-06-29 2021-02-09 奥拉诺时代 Method for fixing mercury-containing waste
US11000719B2 (en) 2016-06-29 2021-05-11 Orano Démantèlement Method for immobilizing a mercury-containing waste
GB2566214B (en) * 2016-06-29 2021-08-25 Institut Francais Des Sciences Et Technologies Des Transp De Lamenagement Et Des Reseaux Process for immobilizing a mercury-containing waste
CN109200795A (en) * 2018-11-13 2019-01-15 中南大学 A kind of method of Elemental Mercury in sulfur dioxide synergic nano sulphur solution efficient removal flue gas
CN109248549A (en) * 2018-11-13 2019-01-22 中南大学 A method of using the washing removing of superfine nano sulphur solution containing Elemental Mercury in mercury gas

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